Comparative ARPES studies of LaOxF1-xBiS2 (x = 0.23 and 0.46)

K. Terashima, T. Wakita, M. Sunagawa, H. Fujiwara, T. Nagayama, K. Ono, H. Kumigashira, M. Nagao, S. Watauchi, I. Tanaka, H. Okazaki, Y. Takano, Y. Mizuguchi, H. Usui, K. Kuroki, Y. Muraoka, T. Yokoya

    研究成果: Conference article査読

    3 被引用数 (Scopus)

    抄録

    BiS2-based layered superconductors are new superconductors, having been paid special attention due to the layered crystal structure and the characteristic electronic structure that can lead to exotic mechanism of superconductivity as well as cooperation of superconductivity and ordered phases. In this article, we report valence band dispersions and Fermi surface topology of LaO1-xFxBiS2 (x = 0.23, Tc < 2 K) studied by angle-resolved photoemission spectroscopy, and compared them with those of LaO1-xFxBiS2 (x = 0.46, Tc = 3.1 K). We discuss experimental x dependent electronic structures and its relation to Tc. We also point to anomalous spectroscopic features in LaO1-xFxBiS2 (x = 0.46) that can be explained by band structure calculations considering distorted lattice, suggesting role of dynamical or static lattice distortion to the physical properties.

    本文言語English
    論文番号012002
    ジャーナルJournal of Physics: Conference Series
    683
    1
    DOI
    出版ステータスPublished - 2016 2 5
    イベントTMU International Symposium on New Quantum Phases Emerging from Novel Crystal Structure - Tokyo, Japan
    継続期間: 2015 9 242015 9 25

    ASJC Scopus subject areas

    • 物理学および天文学(全般)

    フィンガープリント

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